Truck brake



Jan. 30 1923. 1,443,825.

A. G. RADKAL TRUCK BRAKE.

FILED APR.22. 1921- I 2 SHEETS-SHEET 1.

Patented Jan. 30, 1923.

its

AUGUST G. RADKA, OF NEWTON, KANSAS.

TRUCK BRAKE.

Application filed April 22,

To all whom it may concern.

Be it known that 1, AUGUST G. RADKA, a citizen of the United States, residing at Newton, in the county of Harvey and State of Kansas, have invented certain new and useful Improvements in Truck Brakes, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to,brakes for trucks and the like and has for an object to provide means which will automatically retain a truck against movement when the draft lever or tongue is released and which will likewise automatically release such retaining means when draft is applied to the tongue.

A further object of the invention is to provide in combination with a truck having the usual body andsupporting wheels of swinging arms adapted to engage the wheels between the spokes to prevent rotation of some of the wheels with connecting means from said swingingarms to the tongue whereby the movement of the tongue in the direction of the draft releases the retaining means. I

A further object of the invention is to provide in combination with a wheeled truck of swinging arms adapted to engage,

one or more of the wheels and retain such wheels against rotation with connecting means to the tongue or other draft means for automatically releasing the retaining means, and auxiliary means for manually controlling the action of the brakes irrespective of the position of the draft tongue.

lVith this and other objects in view, the invention comprises certain novel elements, units, parts, mechanical movements, functions and combinations as disclosed in the drawings together with mechanical equivalents thereof as will be hereinafter more fully described and claimed.

In the drawings:

Figure 1 is a view of a conventional truck in side elevation with the present invention applied thereto.

Figure 2 is a view in inverted plan of a truck with the invention thereon.

Figure 3 is a longitudinal vertical sectional view through a truck carrying the present invention.

Figure 4. is an inverted plan view showing the invention upon a truck with the brake out of engaging position, some of the 1921. Serial'No. 463,456.

parts being broken away to show the posi tion and operation of other parts.

Figure 5 is a perspective view of the under part of the forward end of the truck showing the arrangement of the operating cables.

Figure 6 is a detail fragmentary view of the roller forming the :pivot of the operating levers.

Figure 7 is a perspective view'of one of the brake arms. T

Like characters of reference indicate corresponding parts throughout the several views.

The present invention is adapted to be applied to trucks or wheeled vehicles of various types and the showing of a conventional truck with body 10 and wheels 11 is intended as no limitation upon the present invention but only explanatory thereof. At

any convenient point upon the vehicle, arms 12 are pivoted at 13 and have downwardly turned elbows 14 and extremities 15, the latter being proper y positioned to swing into the circle of one of the wheels 11 and occupy a position between the spokes of the wheel. As shown, two of these arms 12 are employed but it is to be understood, of course, that the invention is in no way limited.- to two.

To the ends of the arms 12 bars 16 are pivoted at 17 and are pivoted together by a pivot pin. 1.8. The pivot pin 18 is preferably adapted to'engage in any of the several perforations 19 in the bars 16; and to carry a roller 20 interposed between said bars. It is also preferably rigidly secured to a guide 21 which extends along the body 10 through a keeper 22 and through a sec ond guiding means as through a perforation in the bolster 28. The alignment of the keeper 22 and the perforation in the bolster is pivoted at 28 to the hounds 29 in substantially the usual and ordinarymanner.

The other end of the cable 2% passes about a pulley 30 journaled in the forward end of the body 10 and is provided with any ap- J 1;, e:-;-enos between the pivot points .nd the arms 12 and the proportion of the cable 2% and spring; 32 is such the; the spring normally holds the arms 12 with the points 15 in enge nent with the wheels and holds the ring 3]. in engagement with the keeper 33 whereby the tongue is elevated to the position shown at Figures 1 and 3. When the tongue is moves downwardly about its pivot 98 is necessary to draw the vehicle; the cubic 24 draws upon the pulley 2?: drawing; forward the arms 16 to .nnd the arms 12 whereby the extremities l5 :1 re moved item the engugi tion shown at l igure 2 to the ino 0 :tion shown at Figure which permits the movement of the truck in the usual munner without inter'fe once. When the tongue 25 is released. the spring; 32 acting upon the pivots 1T forces the bars 16 resrwerdly to the position shown at Figure 2, therebt elevating the tongue to the position sheen at Figures 1 and 3.

It occasionally happens t desirable to move the VlllCiG 9; *enient with the tongue 1 l eeole hat it is l without en Q P 'o'vision node for this in the ssinp; can the pulley and terminating in the ring; 31. The manual liftingof the ing 01 oprut-es upon the cable in eX-ectl I as does the movi of th justhereinbetore described. 'ior a, theretore, that t e device nu cully applies the extrem 'es 1?) to the wheels to prevent rotation thereot whe the ports 25 or 31 are in norms ly released position. The application of erut't to the tonque in the usual well. l znown manner on Y cslly releases the brake without ditiicuny so that the vehicle presents no difiimlties in the way of mobility by reason of the brakes being applied thereto when stationery.

lVhat I claim is:

1. The combination with a truck embodying :1 body and supporting: wheels of a pair of spaced arms pivoted to the body and havextremities proportioned to engage between spokes of some of the supporting wheels e dra'tt tong uo pivoted to the forward end of the body a cable extending from. the arms to the tongue whereby the application of draft to the tongue swings the arms out oi? engaging position, a spring lapted to more the arms into engaging position when the tongue is relessed and auxiliary manual ineuns tor releasing the engagement ot the arms without moven'ient the draft tongue.

2. 'lhe combination with e tr'ucl embodyl and supporting wheels of eeth the 70d having 'ed to swing; into inching engagement 1 ween the spokes oi? the wheels, e spring; interposed between the arms adapted to yieldin gly hold the extremities in such locking position burs pivoted to the rows, at draft tongue, a cable extending; from the bars to the draft tong gue whereby the application of draft to the tongue op eretes to swing; the arms out of engaging position and auxiliary manual means for actuating; the cable.

3. The combination with a truck embody in a body end supporting wheels of arms 'Ot lllff spaced beneath the body and havnities adapted to swing into lockino ei'igngement between the spokes of some (E'i' wheels, e spring; engaging; the arms edepten to yieldingly hold the arms in such ot-hi position a toggle fol-med between e dret't tongue, :1 cable extending- -e the draft tongue to the toggle whereie application of draft to the tongue sets through the toq gle to swing the arms into unlocked position, and manual means for applying unlocking actuating stress to the cable without application of dra lt to the tongue.

in testimony whereof I hereunto a; signature in presence of two witnesses.

i'iUGllST RADKAU l v itnesses HENRY E. STAI-IL, K. A. RIGHERT. 

